diff --git a/ambassador/ambassador/envoy/v2/v2route.py b/ambassador/ambassador/envoy/v2/v2route.py
index e6df9b8dd6..7e934c66e9 100644
--- a/ambassador/ambassador/envoy/v2/v2route.py
+++ b/ambassador/ambassador/envoy/v2/v2route.py
@@ -109,6 +109,11 @@ def __init__(self, config: 'V2Config', group: IRHTTPMappingGroup) -> None:
                 }
             }
 
+            idle_timeout_ms = group.get('idle_timeout_ms', None)
+
+            if idle_timeout_ms is not None:
+                route['idle_timeout'] = "%0.3fs" % (idle_timeout_ms / 1000.0)
+
             if group.get('rewrite', None):
                 route['prefix_rewrite'] = group['rewrite']
 
diff --git a/ambassador/ambassador/ir/irhttpmapping.py b/ambassador/ambassador/ir/irhttpmapping.py
index 5b5c4a595c..0f94628688 100644
--- a/ambassador/ambassador/ir/irhttpmapping.py
+++ b/ambassador/ambassador/ir/irhttpmapping.py
@@ -83,6 +83,7 @@ class IRHTTPMapping (IRBaseMapping):
         "shadow": True,
         "cluster_timeout_ms": True,
         "timeout_ms": True,
+        "idle_timeout_ms": True,
         "tls": True,
         "use_websocket": True,
         "weight": True,
diff --git a/ambassador/ambassador/ir/irhttpmappinggroup.py b/ambassador/ambassador/ir/irhttpmappinggroup.py
index 9114bd5042..6363e60b8e 100644
--- a/ambassador/ambassador/ir/irhttpmappinggroup.py
+++ b/ambassador/ambassador/ir/irhttpmappinggroup.py
@@ -41,6 +41,7 @@ class IRHTTPMappingGroup (IRBaseMappingGroup):
         'rewrite': True,
         'cluster_timeout_ms': True,
         'timeout_ms': True,
+        'idle_timeout_ms': True,
         'bypass_auth': True,
         'load_balancer': True
     }
@@ -331,5 +332,5 @@ def finalize(self, ir: 'IR', aconf: Config) -> List[IRCluster]:
             # Flatten the case_sensitive field for host_redirect if it exists
             if 'case_sensitive' in redir:
                 self['case_sensitive'] = redir['case_sensitive']
-                
+
             return []
diff --git a/ambassador/schemas/v1/Mapping.schema b/ambassador/schemas/v1/Mapping.schema
index a804da2364..fb925c79c9 100644
--- a/ambassador/schemas/v1/Mapping.schema
+++ b/ambassador/schemas/v1/Mapping.schema
@@ -75,6 +75,7 @@
         "shadow": { "type": "boolean" },
         "cluster_timeout_ms": { "type": "integer" },
         "timeout_ms": { "type": "integer" },
+        "idle_timeout_ms": { "type": "integer" },
         "tls": { "type": [ "string", "boolean" ] },
         "use_websocket": { "type": "boolean" },
         "weight": { "type": "integer" },